2a/21=-2/21

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Solution for 2a/21=-2/21 equation: 



2a/21=-2/21

We move all terms to the left:

2a/21-(-2/21)=0

We get rid of parentheses

2a/21+2/21=0

We multiply all the terms by the denominator


2a+2=0

We move all terms containing a to the left, all other terms to the right

2a=-2

a=-2/2

a=-1

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